AC-25858 - buffer-solution-ph-4-citrate-buffer | 68-04-2

Reagecon’s pH 3.0 Citrate 0.25M Buffer Solution is specified for use in individual European Pharmacopoeia (EP) Monographs. It is tested by an ISO 17025 Accredited Test Method (A2LA Ref: 6739.03) and NIST traceable; has guaranteed stability throughout its entire shelf life; even after opening the bottle.

N-(2,4-Dinitrophenyl)-L-Leucine is a hydrophobic compound that has been used in the analysis of phospholipids. It has a chromophore with an extended cavity and extensibility that allows it to bind to phosphoric acid solutions. This compound's fluorescence properties are not affected by changes in pH, which makes it suitable for use as an analytical method for determining the presence of phosphate ions in water samples. The solubility data and protonation state of this compound make it suitable for use as an antigen or substrate in sodium citrate buffer. N-(2,4-Dinitrophenyl)-L-Leucine can also be hydrolyzed by alkali and analyzed using high performance liquid chromatography (HPLC).

1-(5-Methylisoxazol-3-yl)ethanone is a synthetic compound that has been shown to react with metal ions. It was found to be reactive in hydrochloric acid and spontaneous in alkaline solutions. The compound was catalysed by the presence of acids and analytical methods were developed for its detection in acidic, neutral, and basic solutions. Densities of 1-(5-methylisoxazol-3-yl)ethanone are 1.07 g/mL at 25°C and 1.076 g/mL at 100°C. Buffers used for its analysis include: phosphate buffer pH 7, sodium acetate buffer pH 5, sodium citrate buffer pH 4, potassium phosphate buffer pH 6, ammonium chloride buffer pH 9, ammonium acetate buffer pH 8, potassium chloride buffer pH 10, ammonium sulfate buffer pH 11.